Contract 0x9a1EDb903B058298dd0b06f52876d9D45358B7cB 4

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface AggregatorV3Interface {
  function decimals() external view returns (uint8);

  function description() external view returns (string memory);

  function version() external view returns (uint256);

  // getRoundData and latestRoundData should both raise "No data present"
  // if they do not have data to report, instead of returning unset values
  // which could be misinterpreted as actual reported values.
  function getRoundData(uint80 _roundId)
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );

  function latestRoundData()
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (access/AccessControl.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `_msgSender()` is missing `role`.
     * Overriding this function changes the behavior of the {onlyRole} modifier.
     *
     * Format of the revert message is described in {_checkRole}.
     *
     * _Available since v4.6._
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(account),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * May emit a {RoleGranted} event.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "./IAccessControlEnumerable.sol";
import "./AccessControl.sol";
import "../utils/structs/EnumerableSet.sol";

/**
 * @dev Extension of {AccessControl} that allows enumerating the members of each role.
 */
abstract contract AccessControlEnumerable is IAccessControlEnumerable, AccessControl {
    using EnumerableSet for EnumerableSet.AddressSet;

    mapping(bytes32 => EnumerableSet.AddressSet) private _roleMembers;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControlEnumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) public view virtual override returns (address) {
        return _roleMembers[role].at(index);
    }

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) public view virtual override returns (uint256) {
        return _roleMembers[role].length();
    }

    /**
     * @dev Overload {_grantRole} to track enumerable memberships
     */
    function _grantRole(bytes32 role, address account) internal virtual override {
        super._grantRole(role, account);
        _roleMembers[role].add(account);
    }

    /**
     * @dev Overload {_revokeRole} to track enumerable memberships
     */
    function _revokeRole(bytes32 role, address account) internal virtual override {
        super._revokeRole(role, account);
        _roleMembers[role].remove(account);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";

/**
 * @dev External interface of AccessControlEnumerable declared to support ERC165 detection.
 */
interface IAccessControlEnumerable is IAccessControl {
    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) external view returns (address);

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) external view returns (uint256);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        require(!paused(), "Pausable: paused");
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC1155/IERC1155.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC1155 compliant contract, as defined in the
 * https://eips.ethereum.org/EIPS/eip-1155[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155 is IERC165 {
    /**
     * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
     */
    event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);

    /**
     * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
     * transfers.
     */
    event TransferBatch(
        address indexed operator,
        address indexed from,
        address indexed to,
        uint256[] ids,
        uint256[] values
    );

    /**
     * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
     * `approved`.
     */
    event ApprovalForAll(address indexed account, address indexed operator, bool approved);

    /**
     * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
     *
     * If an {URI} event was emitted for `id`, the standard
     * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
     * returned by {IERC1155MetadataURI-uri}.
     */
    event URI(string value, uint256 indexed id);

    /**
     * @dev Returns the amount of tokens of token type `id` owned by `account`.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id) external view returns (uint256);

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)
        external
        view
        returns (uint256[] memory);

    /**
     * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
     *
     * Emits an {ApprovalForAll} event.
     *
     * Requirements:
     *
     * - `operator` cannot be the caller.
     */
    function setApprovalForAll(address operator, bool approved) external;

    /**
     * @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
     *
     * See {setApprovalForAll}.
     */
    function isApprovedForAll(address account, address operator) external view returns (bool);

    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If the caller is not `from`, it must have been approved to spend ``from``'s tokens via {setApprovalForAll}.
     * - `from` must have a balance of tokens of type `id` of at least `amount`.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes calldata data
    ) external;

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] calldata ids,
        uint256[] calldata amounts,
        bytes calldata data
    ) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.0;

import "../Strings.sol";

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV // Deprecated in v4.8
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 27);
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(
        uint256 x,
        uint256 y,
        uint256 denominator
    ) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1);

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(
        uint256 x,
        uint256 y,
        uint256 denominator,
        Rounding rounding
    ) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10**64) {
                value /= 10**64;
                result += 64;
            }
            if (value >= 10**32) {
                value /= 10**32;
                result += 32;
            }
            if (value >= 10**16) {
                value /= 10**16;
                result += 16;
            }
            if (value >= 10**8) {
                value /= 10**8;
                result += 8;
            }
            if (value >= 10**4) {
                value /= 10**4;
                result += 4;
            }
            if (value >= 10**2) {
                value /= 10**2;
                result += 2;
            }
            if (value >= 10**1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/structs/EnumerableSet.sol)
// This file was procedurally generated from scripts/generate/templates/EnumerableSet.js.

pragma solidity ^0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 *
 * [WARNING]
 * ====
 * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure
 * unusable.
 * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
 *
 * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an
 * array of EnumerableSet.
 * ====
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;
        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping(bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) {
            // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            if (lastIndex != toDeleteIndex) {
                bytes32 lastValue = set._values[lastIndex];

                // Move the last value to the index where the value to delete is
                set._values[toDeleteIndex] = lastValue;
                // Update the index for the moved value
                set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex
            }

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        return set._values[index];
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function _values(Set storage set) private view returns (bytes32[] memory) {
        return set._values;
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
        bytes32[] memory store = _values(set._inner);
        bytes32[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(AddressSet storage set) internal view returns (address[] memory) {
        bytes32[] memory store = _values(set._inner);
        address[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(UintSet storage set) internal view returns (uint256[] memory) {
        bytes32[] memory store = _values(set._inner);
        uint256[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.15;

import "@openzeppelin/contracts/access/AccessControlEnumerable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import "@openzeppelin/contracts/security/Pausable.sol";

import ".././interfaces/HTokenI.sol";
import "../utils/ErrorReporter.sol";
import "../interfaces/PermissionlessOracleI.sol";
import "../interfaces/ControllerI.sol";
import "../controller/ControllerStorage.sol";

/**
 * @title   Honey Protocol Controller
 * @notice  Controller can be interpreted as the brain of the Honey Protocol, is the one who decides:
 *              - who can borrow and how much it can borrow
 *              - who can redeem and how much it can redeem
 *              - who can transfer their hTokens
 *              - enables different markets to be traded
 * @author  Honey Labs Inc.
 * @custom:coauthor     m4rio
 * @custom:contributor  BowTiedPickle
 */
contract Controller is ControllerStorage, ControllerI, AccessControlEnumerable, ReentrancyGuard, Pausable {
  // ---------- Imports ----------
  using EnumerableSet for EnumerableSet.AddressSet;
  using ECDSA for bytes32;

  // ---------- Role Constants ----------
  bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE");
  bytes32 public constant FACTORY_ROLE = keccak256("FACTORY_ROLE");

  // ---------- Versioning ----------

  /// @notice this corresponds to 1.0.0
  uint256 public constant version = 1_000_000;

  // ---------- Parameters ----------

  /// @notice No collateralFactorMantissa may exceed this value
  uint256 internal constant collateralFactorMaxMantissa = 0.9e18; // 90%

  /// @notice The borrow fee or referred borrow fee can not exceed this value
  uint256 public constant borrowFeeCap = 0.02 ether; // 2%

  constructor() {
    _setupRole(DEFAULT_ADMIN_ROLE, msg.sender);
    _setupRole(PAUSER_ROLE, msg.sender);
  }

  // ---------- Public Function ----------

  /**
   * @notice  Add assets to be included in account liquidity calculation
   * @param   _hTokens  The list of addresses of the hToken markets to be enabled
   */
  function enterMarkets(HTokenI[] calldata _hTokens) external override whenNotPaused nonReentrant {
    uint256 len = _hTokens.length;

    for (uint256 i; i < len; ) {
      HTokenI hToken = _hTokens[i];
      addToMarketInternal(hToken, msg.sender);
      unchecked {
        ++i;
      }
    }
  }

  /**
   * @notice Removes asset from sender's account liquidity calculation
   * @dev    Sender must not have an outstanding borrow balance in the asset,
   *          or be providing necessary collateral for an outstanding borrow.
   * @param  _hToken   The address of the asset to be removed
   */
  function exitMarket(HTokenI _hToken) external override whenNotPaused nonReentrant {
    // Get sender tokensHeld and amountOwed underlying from the hToken
    (uint256 tokensHeld, uint256 amountOwed, ) = _hToken.getAccountSnapshot(msg.sender);

    // Fail if the sender has HToken balance, meaning he has underlying deposited
    if (tokensHeld != 0) {
      revert ControllerError(Error.NONZERO_UNDERLYING_BALANCE);
    }

    // Fail if the sender has a borrow balance
    if (amountOwed != 0) {
      revert ControllerError(Error.NONZERO_BORROW_BALANCE);
    }

    Market storage marketToExit = _markets[_hToken];

    // Return true if the sender is not already in the market
    if (!marketToExit.accountMembership[msg.sender]) {
      return;
    }

    // Set hToken account membership to false
    delete marketToExit.accountMembership[msg.sender];

    emit MarketExited(_hToken, msg.sender);
  }

  /**
   * @notice  Checks if the account should be allowed to deposit underlying in the market
   * @param   _hToken     The market to verify the redeem against
   * @param   _depositor  The account that wants to deposit
   * @param   _amount     The number of underlying it wants to deposit
   */
  function depositUnderlyingAllowed(
    HTokenI _hToken,
    address _depositor,
    uint256 _amount
  ) external override whenNotPaused {
    _depositor;
    _amount;
    // Pausing is a very serious situation - we revert to sound the alarms
    if (marketPausedInfo[_hToken].depositPaused) revert PausedAction();

    // This also checks if a market is listed as you can not set an oracle for an unlisted market
    if (address(_oracles[_hToken]) == address(0)) revert ControllerError(Error.ORACLE_NOT_SET);

    Market storage market = _markets[_hToken];

    if (!market.accountMembership[_depositor]) {
      // only hTokens may call depositUnderlyingAllowed if depositor not in market
      if (msg.sender != address(_hToken)) revert Unauthorized();

      // attempt to add depositor to the market
      addToMarketInternal(_hToken, _depositor);

      // it should be impossible to break the important invariant
      assert(market.accountMembership[_depositor]);
    }
  }

  /**
   * @notice  Checks if the account should be allowed to borrow the underlying asset of the given market
   * @param   _hToken         The market to verify the borrow against
   * @param   _borrower       The account which would borrow the asset
   * @param   _collateralId   collateral Id, aka the NFT token Id
   * @param   _borrowAmount   The amount of underlying the account would borrow
   */
  function borrowAllowed(
    HTokenI _hToken,
    address _borrower,
    uint256 _collateralId,
    uint256 _borrowAmount
  ) external override whenNotPaused nonReentrant {
    // Pausing is a very serious situation - we revert to sound the alarms
    if (marketPausedInfo[_hToken].borrowPaused) revert PausedAction();

    // This also checks if a market is listed as you can not set an oracle for an unlisted market
    if (address(_oracles[_hToken]) == address(0)) revert ControllerError(Error.ORACLE_NOT_SET);

    Market storage market = _markets[_hToken];

    if (!market.accountMembership[_borrower]) {
      // only hTokens may call borrowAllowed if borrower not in market
      if (msg.sender != address(_hToken)) revert Unauthorized();

      // attempt to add borrower to the market
      addToMarketInternal(_hToken, _borrower);

      // it should be impossible to break the important invariant
      assert(market.accountMembership[_borrower]);
    }

    uint256 borrowCap = borrowCaps[_hToken];

    // Borrow cap of 0 corresponds to unlimited borrowing
    if (borrowCap != 0) {
      uint256 nextTotalBorrows = HTokenI(_hToken).totalBorrows() + _borrowAmount;
      if (nextTotalBorrows >= borrowCap) revert MarketError(Error.MARKET_CAP_BORROW_REACHED);
    }

    (, uint256 shortfall, ) = getHypotheticalAccountLiquidityBorrowInternal(_hToken, _collateralId, _borrowAmount);
    if (shortfall > 0) {
      revert ControllerError(Error.INSUFFICIENT_LIQUIDITY);
    }
  }

  /**
   * @notice Checks if the collateral is at risk of being liquidated
   * @param  _hToken         The market to verify the liquidation
   * @param  _collateralId   The Collateral Id, aka the NFT token Id
   */
  function liquidationAllowed(HTokenI _hToken, uint256 _collateralId) external view override whenNotPaused {
    // Pausing is a very serious situation - we revert to sound the alarms
    if (marketPausedInfo[_hToken].liquidationPaused) revert PausedAction();

    // This also checks if a market is listed as you can not set an oracle for an unlisted market
    if (address(_oracles[_hToken]) == address(0)) revert ControllerError(Error.ORACLE_NOT_SET);

    (, uint256 shortfall, ) = getHypotheticalAccountLiquidityBorrowInternal(_hToken, _collateralId, 0);

    if (shortfall == 0) revert ControllerError(Error.LIQUIDATION_NOT_ALLOWED);
  }

  /**
   * @notice  Checks if the account should be allowed to redeem tokens in the given market
   * @param   _hToken         The market to verify the redeem against
   * @param   _redeemer       The account which would redeem the tokens
   * @param   _redeemTokens   The number of hTokens to exchange for the underlying asset in the market
   */
  function redeemAllowed(
    HTokenI _hToken,
    address _redeemer,
    uint256 _redeemTokens
  ) public view override whenNotPaused {
    _redeemTokens;
    if (marketPausedInfo[_hToken].redeemPaused) revert PausedAction();

    // This also checks if a market is listed as you can not set an oracle for an unlisted market
    if (address(_oracles[_hToken]) == address(0)) revert ControllerError(Error.ORACLE_NOT_SET);

    Market storage market = _markets[_hToken];

    // If the redeemer is not 'in' the market we revert as no one should redeem if not entered
    if (!market.accountMembership[_redeemer]) {
      revert ControllerError(Error.NOT_FOUND);
    }
    //Otherwise, perform a hypothetical liquidity check to guard against shortfall, we don't do this YET
    (, uint256 shortfall) = getHypotheticalAccountLiquidityRedeemInternal(_hToken, _redeemer, _redeemTokens);
    if (shortfall > 0) {
      revert ControllerError(Error.INSUFFICIENT_LIQUIDITY);
    }
  }

  /**
   * @notice  Checks if the account should be allowed to deposit a collateral
   * @param   _hToken         The market to verify the deposit of the collateral
   * @param   _depositor      The account which deposits the collateral
   * @param   _collateralId   The collateral token id
   */
  function depositCollateralAllowed(
    HTokenI _hToken,
    address _depositor,
    uint256 _collateralId
  ) external override whenNotPaused {
    _depositor;
    _collateralId;
    if (marketPausedInfo[_hToken].depositCollateralPaused) revert PausedAction();

    // This also checks if a market is listed as you can not set an oracle for an unlisted market
    if (address(_oracles[_hToken]) == address(0)) revert ControllerError(Error.ORACLE_NOT_SET);

    Market storage market = _markets[_hToken];

    if (!market.accountMembership[_depositor]) {
      // only hTokens may call borrowAllowed if borrower not in market
      if (msg.sender != address(_hToken)) revert Unauthorized();

      // attempt to add borrower to the market
      addToMarketInternal(_hToken, _depositor);

      // it should be impossible to break the important invariant
      assert(market.accountMembership[_depositor]);
    }
  }

  // ---------- Internal Functions ----------

  /**
   * @notice  Add the market a user's "assets in" for liquidity/withdraw calculations
   * @param   _hToken  The market to enter
   * @param   _account The address of the account to modify
   */
  function addToMarketInternal(HTokenI _hToken, address _account) internal {
    Market storage marketToJoin = _markets[_hToken];

    if (!marketToJoin.isListed) {
      // market is not listed, cannot join
      revert MarketError(Error.MARKET_NOT_LISTED);
    }

    if (marketToJoin.accountMembership[_account]) {
      // already joined
      return;
    }

    marketToJoin.accountMembership[_account] = true;

    emit MarketEntered(_hToken, _account);
  }

  function getCollateralPriceInUnderlying(HTokenI _hToken) internal view returns (uint256) {
    PermissionlessOracleI cachedOracle = _oracles[_hToken];
    uint8 decimals = _hToken.decimals();
    (uint128 nftPriceInETH, uint128 lastUpdated) = cachedOracle.getFloorPrice(
      address(_hToken.collateralToken()),
      decimals
    );

    if (
      lastUpdated < block.timestamp &&
      block.timestamp - lastUpdated > cachedOracle.updateThreshold(address(_hToken.collateralToken()))
    ) revert OracleNotUpdated();

    uint256 underlyingPriceInUSD = uint256(cachedOracle.getUnderlyingPriceInUSD(_hToken.underlyingToken(), decimals));
    uint256 ethPrice = uint256(cachedOracle.getEthPrice(decimals));
    return (nftPriceInETH * ethPrice) / underlyingPriceInUSD;
  }

  /*** Views  ***/

  /**
   * @notice  Determine what the account liquidity would be if the given amounts were redeemed/borrowed
   * @param   _hToken        The market to hypothetically redeem/borrow in
   * @param   _account       The account to determine liquidity for
   * @param   _redeemTokens  The number of tokens to hypothetically redeem
   * @param   _borrowAmount  The amount of underlying to hypothetically borrow
   * @param   _collateralId  The Collateral Id, aka the NFT token Id
   * @return  liquidityTillLiquidation - hypothetical account liquidity in excess of collateral requirements
   * @return  shortfall - hypothetical account shortfall below collateral requirements
   * @return  liquidityTillLTV - Loan to value shortfall, this is the max a user can borrow
   */
  function getHypotheticalAccountLiquidity(
    HTokenI _hToken,
    address _account,
    uint256 _collateralId,
    uint256 _redeemTokens,
    uint256 _borrowAmount
  )
    external
    view
    override
    returns (
      uint256 liquidityTillLiquidation,
      uint256 shortfall,
      uint256 liquidityTillLTV
    )
  {
    if (_redeemTokens > 0)
      (liquidityTillLiquidation, shortfall) = getHypotheticalAccountLiquidityRedeemInternal(
        _hToken,
        _account,
        _redeemTokens
      );
    else
      (liquidityTillLiquidation, shortfall, liquidityTillLTV) = getHypotheticalAccountLiquidityBorrowInternal(
        _hToken,
        _collateralId,
        _borrowAmount
      );
  }

  /**
   * @notice  Returns whether the given account is entered in the given asset
   * @param   _hToken   The hToken to check
   * @param   _account  The address of the account to check
   * @return  True if the account is in the asset, otherwise false.
   */
  function checkMembership(HTokenI _hToken, address _account) external view override returns (bool) {
    return _markets[_hToken].accountMembership[_account];
  }

  /**
   * @notice  Checks if the account should be allowed to transfer tokens in the given market
   * @param   _hToken  The market to verify the transfer against
   */
  function transferAllowed(HTokenI _hToken) external view override whenNotPaused {
    // Pausing is a very serious situation - we revert to sound the alarms
    if (marketPausedInfo[_hToken].transferPaused) revert PausedAction();

    Market storage market = _markets[_hToken];
    if (!market.isListed) {
      revert MarketError(Error.MARKET_NOT_LISTED);
    }
  }

  /**
   * @notice  Returns the borrow fee per market, accounts for referral
   * @param   _hToken     The market we want the borrow fee for
   * @param   _referral   Referral code for Referral program of Honey Labs
   * @param   _signature  Signed message provided by Honey Labs
   */
  function getBorrowFeePerMarket(
    HTokenI _hToken,
    string calldata _referral,
    bytes calldata _signature
  ) external view returns (uint256, bool) {
    (address signed, ) = keccak256(abi.encodePacked(_referral)).toEthSignedMessageHash().tryRecover(_signature);
    if (_referralSigner == signed) {
      return (_referralBorrowFeePerMarket[_hToken], true);
    }
    return (_borrowFeePerMarket[_hToken], false);
  }

  /**
   * @notice  Returns the borrow fee per market if provided a referral code, accounts for referral
   * @param   _hToken  The market we want the borrow fee for
   */
  function getReferralBorrowFeePerMarket(HTokenI _hToken) external view returns (uint256) {
    return _referralBorrowFeePerMarket[_hToken];
  }

  /**
   * @notice  Checks if the account should be allowed to repay a borrow in the given market
   * @param   _hToken        The market to verify the repay against
   * @param   _repayAmount   The amount of the underlying asset the account would repay
   * @param   _collateralId  The Collateral Id, aka the NFT token Id
   */
  function repayBorrowAllowed(
    HTokenI _hToken,
    uint256 _repayAmount,
    uint256 _collateralId
  ) external view override whenNotPaused {
    _repayAmount;
    _collateralId;
    if (marketPausedInfo[_hToken].repayBorrowPaused) revert PausedAction();

    // This also checks if a market is listed as you can not set an oracle for an unlisted market
    if (address(_oracles[_hToken]) == address(0)) revert ControllerError(Error.ORACLE_NOT_SET);
  }

  /**
   * @notice  Checks if withdrawal are allowed for this collateral id
   * @param   _hToken        The market to verify the withdrawal from
   * @param   _collateralId  The collateral Id we want to withdraw
   */
  function withdrawCollateralAllowed(HTokenI _hToken, uint256 _collateralId) external view override whenNotPaused {
    if (!_markets[_hToken].isListed) {
      revert MarketError(Error.MARKET_NOT_LISTED);
    }
    if (_hToken.getDebtForCollateral(_collateralId) != 0) revert ControllerError(Error.WITHDRAW_NOT_ALLOWED);
  }

  /**
   * @notice Checks if a market exists and it's listed
   * @param  _hToken  The market we check to see if it exists
   * @return bool true or false
   */
  function marketExists(HTokenI _hToken) external view override whenNotPaused returns (bool) {
    return _markets[_hToken].isListed;
  }

  /**
   * @notice Returns market data for a specific market
   * @param  _hToken  The market we want to retrieved Controller data
   * @return bool If the market is listed
   * @return uint256 MAX Factor Mantissa
   * @return uint256 Collateral Factor Mantissa
   */
  function getMarketData(HTokenI _hToken)
    external
    view
    override
    returns (
      bool,
      uint256,
      uint256
    )
  {
    Market storage market = _markets[_hToken];
    return (market.isListed, market.LTVFactorMantissa, market.collateralFactorMantissa);
  }

  /**
   * @notice  Checks if an underlying exists in the market
   * @param   _underlying The underlying address to check if exists
   * @return  bool true or false
   */
  function underlyingExistsInMarkets(address _underlying) external view override returns (bool) {
    return registeredUnderlying.contains(_underlying);
  }

  /**
   * @notice  Checks if a collateral exists in the market
   * @param   _collateral   The collateral to check if exists
   * @return  bool true or false
   */
  function collateralExistsInMarkets(address _collateral) external view override returns (bool) {
    return registeredCollateral.contains(_collateral);
  }

  /**
   * @notice  Checks if a certain action is paused within a market
   * @param   _hToken   The market we want to check if an action is paused
   * @param   _target   The action we want to check if it's paused
   * @return  bool true or false
   */
  function isActionPaused(HTokenI _hToken, uint256 _target) external view override returns (bool) {
    if (!_markets[_hToken].isListed) revert MarketError(Error.MARKET_NOT_LISTED);

    if (_target == 0) {
      return marketPausedInfo[_hToken].borrowPaused;
    } else if (_target == 1) {
      return marketPausedInfo[_hToken].transferPaused;
    } else if (_target == 2) {
      return marketPausedInfo[_hToken].redeemPaused;
    } else if (_target == 3) {
      return marketPausedInfo[_hToken].liquidationPaused;
    } else if (_target == 4) {
      return marketPausedInfo[_hToken].repayBorrowPaused;
    } else if (_target == 5) {
      return marketPausedInfo[_hToken].depositPaused;
    } else if (_target == 6) {
      return marketPausedInfo[_hToken].depositCollateralPaused;
    }

    revert ControllerError(Error.INVALID_ACTION);
  }

  /**
   * @notice  Determine what the account liquidity would be if the given amounts were redeemed
   * @param   _hToken         The market to hypothetically redeem/borrow in
   * @param   _account        The account to determine liquidity for
   * @param   _redeemTokens   The number of tokens to hypothetically redeem
   * @dev     Note that we calculate the exchangeRateStored for each collateral hToken using stored data,
   *            without calculating accumulated interest. Also not used for now
   * @return  liquidity - hypothetical account liquidity in excess of collateral requirements
   * @return  shortfall - hypothetical account shortfall below collateral requirements
   */
  function getHypotheticalAccountLiquidityRedeemInternal(
    HTokenI _hToken,
    address _account,
    uint256 _redeemTokens
  ) internal view returns (uint256 liquidity, uint256 shortfall) {
    // Read the balances and exchange rate from the _hToken
    (uint256 hTokenBalance, , uint256 exchangeRateMantissa) = _hToken.getAccountSnapshot(_account);
    if (hTokenBalance < _redeemTokens) revert ControllerError(Error.BALANCE_INSUFFICIENT);
    uint256 toWithdraw = (_redeemTokens * exchangeRateMantissa) / 1e18;
    liquidity = _hToken.getCashPrior();

    // If we don't have enough liquidity to cover redeem amount raise a shortfall
    if (toWithdraw > liquidity) {
      shortfall = toWithdraw - liquidity;
    }
  }

  /**
   * @notice  Determine what the account liquidity would be if the given amounts were borrowed
   * @param   _hToken         The market to hypothetically redeem/borrow in
   * @param   _collateralId   The Collateral Id, aka the NFT token Id
   * @param   _borrowAmount   The amount of underlying to hypothetically borrow
   * @dev     Note that we calculate the exchangeRateStored for each collateral hToken using stored data,
   *          without calculating accumulated interest.
   * @return  liquidityTillLiquidation - hypothetical account liquidity in excess of collateral requirements
   * @return  shortfall - hypothetical account shortfall below collateral requirements
   * @return  liquidityTillLTV - Loan to value shortfall
   */
  function getHypotheticalAccountLiquidityBorrowInternal(
    HTokenI _hToken,
    uint256 _collateralId,
    uint256 _borrowAmount
  )
    internal
    view
    returns (
      uint256 liquidityTillLiquidation,
      uint256 shortfall,
      uint256 liquidityTillLTV
    )
  {
    uint256 sumCollateral = getCollateralPriceInUnderlying(_hToken);
    uint256 availableUnderlying = _hToken.getCashPrior();

    // Read the balances and exchange rate from the hToken
    uint256 borrowBalance = _hToken.getDebtForCollateral(_collateralId);

    if (sumCollateral == 0) {
      revert ControllerError(Error.PRICE_ERROR);
    }
    uint256 sumBorrowPlusEffects = borrowBalance + _borrowAmount;

    // If we don't have enough liquidity to cover borrow amount then revert
    if (_borrowAmount > availableUnderlying) revert ControllerError(Error.INSUFFICIENT_LIQUIDITY);

    // computing collateral factor applied on the collateral total amount
    // collateral factor % from the NFT price
    uint256 ltvValue = (_markets[_hToken].LTVFactorMantissa * sumCollateral) / 1e18;
    sumCollateral = (_markets[_hToken].collateralFactorMantissa * sumCollateral) / 1e18;

    unchecked {
      if (ltvValue > sumBorrowPlusEffects) {
        liquidityTillLiquidation = sumCollateral - sumBorrowPlusEffects;
        liquidityTillLTV = ltvValue - sumBorrowPlusEffects;
      } else if (sumCollateral > sumBorrowPlusEffects) {
        liquidityTillLiquidation = sumCollateral - sumBorrowPlusEffects;
      } else {
        shortfall = sumBorrowPlusEffects - sumCollateral;
      }
    }
  }

  /**
   * @notice  Returns the oracle per market
   * @param   _hToken   The market to get the oracle for
   */
  function oracle(HTokenI _hToken) external view override returns (PermissionlessOracleI) {
    return _oracles[_hToken];
  }

  function referralSigner() external view returns (address) {
    return _referralSigner;
  }

  // ---------- Admin Functions ----------

  /**
   * @notice  Sets a new price oracle for an HToken
   * @param   _hToken     HToken to set the oracle for
   * @param   _newOracle  New oracle address
   */
  function _setPriceOracle(HTokenI _hToken, PermissionlessOracleI _newOracle) external {
    if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender) && !hasRole(FACTORY_ROLE, msg.sender)) revert Unauthorized();

    Market storage market = _markets[_hToken];
    if (!market.isListed) {
      revert MarketError(Error.MARKET_NOT_LISTED);
    }
    emit PriceOracleUpdated(_oracles[_hToken], _newOracle);

    _oracles[_hToken] = _newOracle;
  }

  /**
   * @notice  Sets the maxLTVFactor and collateral factor for an HToken
   * @param   _hToken                       Market to set the factors for
   * @param   _newLTVFactorMantissa         New max LTV factor in mantissa format
   * @param   _newCollateralFactorMantissa  New collateral factor in mantissa format
   */
  function _setFactors(
    HTokenI _hToken,
    uint256 _newLTVFactorMantissa,
    uint256 _newCollateralFactorMantissa
  ) external {
    if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender) && !hasRole(FACTORY_ROLE, msg.sender)) revert Unauthorized();
    if (_newLTVFactorMantissa == 0) revert ControllerError(Error.INVALID_MAX_LTV_FACTOR);
    if (_newCollateralFactorMantissa <= _newLTVFactorMantissa) revert ControllerError(Error.INVALID_COLLATERAL_FACTOR);

    // Check collateral factor <= collateralFactorMaxMantissa
    if (collateralFactorMaxMantissa < _newCollateralFactorMantissa) {
      revert ControllerError(Error.INVALID_COLLATERAL_FACTOR);
    }

    // Fail if oracle not set, then the market is not listed
    if (address(_oracles[_hToken]) == address(0)) revert ControllerError(Error.ORACLE_NOT_SET);

    Market storage market = _markets[_hToken];

    emit CollateralFactorUpdated(_hToken, market.collateralFactorMantissa, _newCollateralFactorMantissa);
    emit NewMaxLTVFactor(_hToken, market.LTVFactorMantissa, _newLTVFactorMantissa);

    // Set market's factors to new factors
    market.collateralFactorMantissa = _newCollateralFactorMantissa;
    market.LTVFactorMantissa = _newLTVFactorMantissa;
  }

  /**
   * @notice  Add the market to the markets mapping and set it as listed
   * @dev     Admin function to set isListed and add support for the market
   * @param   _hToken The address of the market (token) to list
   */
  function _supportMarket(HTokenI _hToken) external {
    if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender) && !hasRole(FACTORY_ROLE, msg.sender)) revert Unauthorized();

    Market storage market = _markets[_hToken];

    if (market.isListed) {
      revert MarketError(Error.MARKET_ALREADY_LISTED);
    }

    if (!_hToken.supportsInterface(type(HTokenI).interfaceId)) revert WrongParams();

    market.isListed = true;
    market.collateralFactorMantissa = 0;

    IERC20 underlying = _hToken.underlyingToken();
    IERC721 collateral = _hToken.collateralToken();

    if (address(underlying) == address(0) || address(collateral) == address(0))
      revert ControllerError(Error.MARKET_INVALID);

    registeredUnderlying.add(address(underlying));
    registeredCollateral.add(address(collateral));

    emit MarketListed(_hToken);
  }

  /**
   * @notice  Remove the market from the markets mapping
   * @param   _hToken The address of the market (token) to de-list/remove
   */
  function _removeMarket(HTokenI _hToken) external {
    if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender)) revert Unauthorized();

    Market storage market = _markets[_hToken];

    if (!market.isListed) {
      revert MarketError(Error.MARKET_NOT_LISTED);
    }

    // You can not remove a market if the oracle is present.
    if (address(_oracles[_hToken]) != address(0)) revert ControllerError(Error.ORACLE_IS_PRESENT);

    delete _markets[_hToken];

    IERC20 underlying = _hToken.underlyingToken();
    IERC721 collateral = _hToken.collateralToken();

    registeredUnderlying.remove(address(underlying));
    registeredCollateral.remove(address(collateral));

    emit MarketRemoved(_hToken);
  }

  /**
   * @notice  Set the given borrow caps for the given hToken markets. Borrowing that brings total borrows to or above borrow cap will revert.
   * @dev     Admin function to set the borrow caps. A borrow cap of 0 corresponds to unlimited borrowing.
   * @param   _hTokens The addresses of the markets (tokens) to change the borrow caps for
   * @param   _newBorrowCaps The new borrow cap values in underlying to be set. A value of 0 corresponds to unlimited borrowing.
   */
  function _setMarketBorrowCaps(HTokenI[] calldata _hTokens, uint256[] calldata _newBorrowCaps) external {
    if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender)) revert Unauthorized();

    uint256 numMarkets = _hTokens.length;
    uint256 numBorrowCaps = _newBorrowCaps.length;

    if (numMarkets == 0 || numMarkets != numBorrowCaps) revert WrongParams();

    for (uint256 i; i < numMarkets; ) {
      HTokenI hToken = _hTokens[i];
      Market storage market = _markets[hToken];

      if (!market.isListed) {
        revert MarketError(Error.MARKET_NOT_LISTED);
      }

      borrowCaps[_hTokens[i]] = _newBorrowCaps[i];
      emit BorrowCapUpdated(_hTokens[i], _newBorrowCaps[i]);
      unchecked {
        ++i;
      }
    }
  }

  /**
   * @notice  Pause an action for a particular HToken
   * @param   _hToken   HToken to pause
   * @param   _state    True for paused, false for unpaused
   * @param   _target   Target ID of the component to pause
   */
  function _pauseComponent(
    HTokenI _hToken,
    bool _state,
    uint256 _target
  ) external {
    if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender) && !hasRole(PAUSER_ROLE, msg.sender)) revert Unauthorized();
    if (!_markets[_hToken].isListed) revert MarketError(Error.MARKET_NOT_LISTED);

    if (_target == 0) {
      marketPausedInfo[_hToken].borrowPaused = _state;
      emit ActionPausedhToken(_hToken, "Borrow", _state);
    } else if (_target == 1) {
      marketPausedInfo[_hToken].transferPaused = _state;
      emit ActionPausedhToken(_hToken, "Transfer", _state);
    } else if (_target == 2) {
      marketPausedInfo[_hToken].redeemPaused = _state;
      emit ActionPausedhToken(_hToken, "Redeem", _state);
    } else if (_target == 3) {
      marketPausedInfo[_hToken].liquidationPaused = _state;
      emit ActionPausedhToken(_hToken, "Liquidation", _state);
    } else if (_target == 4) {
      marketPausedInfo[_hToken].repayBorrowPaused = _state;
      emit ActionPausedhToken(_hToken, "RepayBorrow", _state);
    } else if (_target == 5) {
      marketPausedInfo[_hToken].depositPaused = _state;
      emit ActionPausedhToken(_hToken, "DepositUnderlying", _state);
    } else if (_target == 6) {
      marketPausedInfo[_hToken].depositCollateralPaused = _state;
      emit ActionPausedhToken(_hToken, "DepositCollateral", _state);
    } else revert ControllerError(Error.INVALID_ACTION);
  }

  /**
   * @notice  Pauses the controller
   * @param   _state True to pause, false to unpause
   */
  function _pauseController(bool _state) external {
    if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender)) revert Unauthorized();

    if (_state) _pause();
    else _unpause();
    emit ControllerPaused(_state);
  }

  /**
   * @notice  Set the borrow fee for the given hToken market
   * @param   _market The market to set the borrow fee for
   * @param   _fee    The new borrow fee to set
   */
  function _setBorrowFeePerMarket(
    HTokenI _market,
    uint256 _fee,
    uint256 _referralFee
  ) external {
    if (_fee > borrowFeeCap || _referralFee > borrowFeeCap) revert ControllerError(Error.AMOUNT_TOO_BIG);
    if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender) && !hasRole(FACTORY_ROLE, msg.sender)) revert Unauthorized();

    emit BorrowFeePerMarketUpdated(_market, _fee, _referralFee);
    _borrowFeePerMarket[_market] = _fee;
    _referralBorrowFeePerMarket[_market] = _referralFee;
  }

  function _setReferralSigner(address _newSigner) external {
    if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender)) revert Unauthorized();

    emit ReferralSignerUpdated(_referralSigner, _newSigner);
    _referralSigner = _newSigner;
  }

  /**
   * @dev See {IERC165-supportsInterface}.
   */
  function supportsInterface(bytes4 _interfaceId) public pure override returns (bool) {
    return _interfaceId == type(AccessControlEnumerable).interfaceId || _interfaceId == type(ControllerI).interfaceId;
  }

  // ---------- Events ----------

  /// @notice Emitted when an admin supports a market
  event MarketListed(HTokenI indexed _hToken);

  /// @notice Emitted when an admin removes a market
  event MarketRemoved(HTokenI indexed _hToken);

  /// @notice Emitted when an account enters a market
  event MarketEntered(HTokenI indexed _hToken, address _account);

  /// @notice Emitted when an account exits a market
  event MarketExited(HTokenI indexed _hToken, address _account);

  /// @notice Emitted when close factor is changed by admin
  event NewMaxLTVFactor(HTokenI indexed _hToken, uint256 _oldMaxLTVFactorMantissa, uint256 _newMaxLTVFactorMantissa);

  /// @notice Emitted when a collateral factor is changed by admin
  event CollateralFactorUpdated(
    HTokenI indexed _hToken,
    uint256 _oldCollateralFactorMantissa,
    uint256 _newCollateralFactorMantissa
  );

  /// @notice Emitted when price oracle is changed
  event PriceOracleUpdated(PermissionlessOracleI _oldPriceOracle, PermissionlessOracleI _newPriceOracle);

  /// @notice Emitted when an action is paused on a market
  event ActionPausedhToken(HTokenI indexed _hToken, string _action, bool _pauseState);

  /// @notice Emitted when borrow cap for a hToken is changed
  event BorrowCapUpdated(HTokenI indexed _hToken, uint256 _newBorrowCap);

  /// @notice Emitted when borrow cap guardian is changed
  event BorrowCapGuardianUpdated(address _oldBorrowCapGuardian, address _newBorrowCapGuardian);

  /// @notice Emitted when the borrow fee per market is updated
  event BorrowFeePerMarketUpdated(HTokenI indexed _market, uint256 _fee, uint256 _referralFee);

  /// @notice Emitted when the signer that signs the referral codes is updated
  event ReferralSignerUpdated(address _oldSigner, address _newSigner);

  /// @notice Emitted when the controller is paused/unpaused
  event ControllerPaused(bool _paused);
}

//SPDX-License-Identifier: BUSL-1.1

pragma solidity ^0.8.15;

import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";
import ".././interfaces/HTokenI.sol";
import ".././interfaces/PermissionlessOracleI.sol";

/**
/**
 * @title   Honey Protocol Controller Storage
 * @notice  Storage 
 * @author  Honey Labs Inc.
 * @custom:coauthor     m4rio
 * @custom:contributor  BowTiedPickle
 */
contract ControllerStorage {
  using EnumerableSet for EnumerableSet.AddressSet;

  /**
   * @notice Signer address that signed the referral hashes
   */
  address internal _referralSigner;

  struct Market {
    /// @notice Whether or not this market is listed
    bool isListed;
    /**
     * @notice Multiplier representing the most one can borrow against their collateral in this market.
     *         For instance, 0.5e18 to allow borrowing 50% of collateral value.
     *         Must be between 0 (0%) and 1e18 (100%), and stored as a mantissa.
     */
    uint256 LTVFactorMantissa;
    /**
     * @notice Multiplier representing the maximum fraction of collateral value allowable as debt before liquidation in this market.
     *         For instance, 0.9e18 to liquidate any debt position >= 90% of the collateral value.
     *         Must be between 0 (0%) and 1e18 (100%), and stored as a mantissa.
     */
    uint256 collateralFactorMantissa;
    /// @notice Per-market mapping of "accounts in this market"
    mapping(address => bool) accountMembership;
  }

  /**
   * @notice Mapping for price oracles per market
   */
  mapping(HTokenI => PermissionlessOracleI) internal _oracles;

  /**
   * @notice Official mapping of hTokens -> Market metadata
   * @dev Used e.g. to determine if a market is supported
   */
  mapping(HTokenI => Market) internal _markets;

  /**
   * @notice Info about functionalities being paused in a market
   */

  struct MarketPausedInfo {
    bool borrowPaused;
    bool transferPaused;
    bool redeemPaused;
    bool liquidationPaused;
    bool repayBorrowPaused;
    bool depositPaused;
    bool depositCollateralPaused;
  }

  /**
   * @notice Mapping for pausing components per market
   */
  mapping(HTokenI => MarketPausedInfo) public marketPausedInfo;

  /**
   * @notice Whether the ERC-20 token is used as an underlying for any markets
   */
  EnumerableSet.AddressSet internal registeredUnderlying;

  /**
   * @notice Whether the ERC-721 token is used as a collateral for any markets
   */
  EnumerableSet.AddressSet internal registeredCollateral;

  /**
   * @notice Mapping of borrow caps enforced within borrowAllowed for each market address.
   *         Defaults to zero which corresponds to unlimited borrowing.
   */
  mapping(HTokenI => uint256) public borrowCaps;

  /**
   * @notice Mapping of borrow fee per market. The borrow fee represents the fee added on tob of the borrowed amount
   */
  mapping(HTokenI => uint256) internal _borrowFeePerMarket;

  /**
   * @notice Mapping of borrow fee per market if the borrow is made via a referral code.
   *          The borrow fee represents the fee added on tob of the borrowed amount
   */
  mapping(HTokenI => uint256) internal _referralBorrowFeePerMarket;
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.8.4;

import "./HTokenI.sol";
import "./PermissionlessOracleI.sol";

/**
 * @title   Interface of Controller
 * @author  Honey Labs Inc.
 * @custom:coauthor     m4rio
 * @custom:contributor  BowTiedPickle
 */
interface ControllerI {
  /**
   * @notice returns the oracle per market
   */
  function oracle(HTokenI _hToken) external view returns (PermissionlessOracleI);

  /**
   * @notice Add assets to be included in account liquidity calculation
   * @param _hTokens The list of addresses of the hToken markets to be enabled
   */
  function enterMarkets(HTokenI[] calldata _hTokens) external;

  /**
   * @notice Removes asset from sender's account liquidity calculation
   * @dev Sender must not have an outstanding borrow balance in the asset,
   *  or be providing necessary collateral for an outstanding borrow.
   * @param _hToken The address of the asset to be removed
   */
  function exitMarket(HTokenI _hToken) external;

  /**
   * @notice Checks if the account should be allowed to deposit underlying in the market
   * @param _hToken The market to verify the redeem against
   * @param _depositor The account which that wants to deposit
   * @param _amount The number of underlying it wants to deposit
   */
  function depositUnderlyingAllowed(
    HTokenI _hToken,
    address _depositor,
    uint256 _amount
  ) external;

  /**
   * @notice Checks if the account should be allowed to borrow the underlying asset of the given market
   * @param _hToken The market to verify the borrow against
   * @param _borrower The account which would borrow the asset
   * @param _collateralId collateral Id, aka the NFT token Id
   * @param _borrowAmount The amount of underlying the account would borrow
   */
  function borrowAllowed(
    HTokenI _hToken,
    address _borrower,
    uint256 _collateralId,
    uint256 _borrowAmount
  ) external;

  /**
   * @notice Checks if the account should be allowed to deposit a collateral
   * @param _hToken The market to verify the deposit of the collateral
   * @param _depositor The account which deposits the collateral
   * @param _collateralId The collateral token id
   */
  function depositCollateralAllowed(
    HTokenI _hToken,
    address _depositor,
    uint256 _collateralId
  ) external;

  /**
   * @notice Checks if the account should be allowed to redeem tokens in the given market
   * @param _hToken The market to verify the redeem against
   * @param _redeemer The account which would redeem the tokens
   * @param _redeemTokens The number of hTokens to exchange for the underlying asset in the market
   */
  function redeemAllowed(
    HTokenI _hToken,
    address _redeemer,
    uint256 _redeemTokens
  ) external view;

  /**
   * @notice Checks if the collateral is at risk of being liquidated
   * @param _hToken The market to verify the liquidation
   * @param _collateralId collateral Id, aka the NFT token Id
   */
  function liquidationAllowed(HTokenI _hToken, uint256 _collateralId) external view;

  /**
   * @notice Determine what the account liquidity would be if the given amounts were redeemed/borrowed
   * @param _hToken The market to hypothetically redeem/borrow in
   * @param _account The account to determine liquidity for
   * @param _redeemTokens The number of tokens to hypothetically redeem
   * @param _borrowAmount The amount of underlying to hypothetically borrow
   * @param _collateralId collateral Id, aka the NFT token Id
   * @return liquidity - hypothetical account liquidity in excess of collateral requirements
   * @return shortfall - hypothetical account shortfall below collateral requirements
   * @return ltvShortfall - Loan to value shortfall, this is the max a user can borrow
   */
  function getHypotheticalAccountLiquidity(
    HTokenI _hToken,
    address _account,
    uint256 _collateralId,
    uint256 _redeemTokens,
    uint256 _borrowAmount
  )
    external
    view
    returns (
      uint256 liquidity,
      uint256 shortfall,
      uint256 ltvShortfall
    );

  /**
   * @notice Returns whether the given account is entered in the given asset
   * @param _hToken The hToken to check
   * @param _account The address of the account to check
   * @return True if the account is in the asset, otherwise false.
   */
  function checkMembership(HTokenI _hToken, address _account) external view returns (bool);

  /**
   * @notice Checks if the account should be allowed to transfer tokens in the given market
   * @param _hToken The market to verify the transfer against
   */
  function transferAllowed(HTokenI _hToken) external;

  /**
   * @notice Checks if the account should be allowed to repay a borrow in the given market
   * @param _hToken The market to verify the repay against
   * @param _repayAmount The amount of the underlying asset the account would repay
   * @param _collateralId collateral Id, aka the NFT token Id
   */
  function repayBorrowAllowed(
    HTokenI _hToken,
    uint256 _repayAmount,
    uint256 _collateralId
  ) external view;

  /**
   * @notice checks if withdrawal are allowed for this token id
   * @param _hToken The market to verify the withdrawal from
   * @param _collateralId what to pay for
   */
  function withdrawCollateralAllowed(HTokenI _hToken, uint256 _collateralId) external view;

  /**
   * @notice checks if a market exists and it's listed
   * @param _hToken the market we check to see if it exists
   * @return bool true or false
   */
  function marketExists(HTokenI _hToken) external view returns (bool);

  /**
   * @notice Returns market data for a specific market
   * @param _hToken the market we want to retrieved Controller data
   * @return bool If the market is listed
   * @return uint256 MAX Factor Mantissa
   * @return uint256 Collateral Factor Mantissa
   */
  function getMarketData(HTokenI _hToken)
    external
    view
    returns (
      bool,
      uint256,
      uint256
    );

  /**
   * @notice checks if an underlying exists in the market
   * @param _underlying the underlying to check if exists
   * @return bool true or false
   */
  function underlyingExistsInMarkets(address _underlying) external view returns (bool);

  /**
   * @notice checks if a collateral exists in the market
   * @param _collateral the collateral to check if exists
   * @return bool true or false
   */
  function collateralExistsInMarkets(address _collateral) external view returns (bool);

  /**
   * @notice  Checks if a certain action is paused within a market
   * @param   _hToken   The market we want to check if an action is paused
   * @param   _target   The action we want to check if it's paused
   * @return  bool true or false
   */
  function isActionPaused(HTokenI _hToken, uint256 _target) external view returns (bool);

  /**
   * @notice returns the borrow fee per market, accounts for referral
   * @param _hToken the market we want the borrow fee for
   * @param _referral referral code for Referral program of Honey Labs
   * @param _signature signed message provided by Honey Labs
   */
  function getBorrowFeePerMarket(
    HTokenI _hToken,
    string calldata _referral,
    bytes calldata _signature
  ) external view returns (uint256, bool);

  /**
   * @notice returns the borrow fee per market if provided a referral code, accounts for referral
   * @param _hToken the market we want the borrow fee for
   */
  function getReferralBorrowFeePerMarket(HTokenI _hToken) external view returns (uint256);

  // ---------- Permissioned Functions ----------

  function _supportMarket(HTokenI _hToken) external;

  function _setPriceOracle(HTokenI _hToken, PermissionlessOracleI _newOracle) external;

  function _setFactors(
    HTokenI _hToken,
    uint256 _newMaxLTVFactorMantissa,
    uint256 _newCollateralFactorMantissa
  ) external;

  function _setBorrowFeePerMarket(
    HTokenI _market,
    uint256 _fee,
    uint256 _referralFee
  ) external;

  function _pauseComponent(
    HTokenI _hToken,
    bool _state,
    uint256 _target
  ) external;
}

//SPDX-License-Identifier: BUSL-1.1

pragma solidity >=0.8.4;
import "./HTokenInternalI.sol";

/**
 * @title   Interface of HToken
 * @author  Honey Labs Inc.
 * @custom:coauthor BowTiedPickle
 * @custom:coauthor m4rio
 */
interface HTokenI is HTokenInternalI {
  /**
   * @notice  Deposit underlying ERC-20 asset and mint hTokens
   * @dev     Pull pattern, user must approve the contract before calling. If _to is address(0) then it becomes msg.sender
   * @param   _amount   Quantity of underlying ERC-20 to transfer in
   * @param   _to       Target address to mint hTokens to
   */
  function depositUnderlying(uint256 _amount, address _to) external;

  /**
   * @notice  Redeem a specified amount of hTokens for their underlying ERC-20 asset
   * @param   _amount   Quantity of hTokens to redeem for underlying ERC-20
   */
  function redeem(uint256 _amount) external;

  /**
   * @notice  Withdraws the specified amount of underlying ERC-20 asset, consuming the minimum amount of hTokens necessary
   * @param   _amount   Quantity of underlying ERC-20 tokens to withdraw
   */
  function withdraw(uint256 _amount) external;

  /**
   * @notice  Deposit multiple specified tokens of the underlying ERC-721 asset and mint ERC-1155 deposit coupon NFTs
   * @dev     Pull pattern, user must approve the contract before calling.
   * @param   _collateralIds  Token IDs of underlying ERC-721 to be transferred in
   */
  function depositCollateral(uint256[] calldata _collateralIds) external;

  /**
   * @notice  Sender borrows assets from the protocol against the specified collateral asset, without a referral code
   * @dev     Collateral must be deposited first.
   * @param   _borrowAmount   Amount of underlying ERC-20 to borrow
   * @param   _collateralId   Token ID of underlying ERC-721 to be borrowed against
   */
  function borrow(uint256 _borrowAmount, uint256 _collateralId) external;

  /**
   * @notice  Sender borrows assets from the protocol against the specified collateral asset, using a referral code
   * @param   _borrowAmount   Amount of underlying ERC-20 to borrow
   * @param   _collateralId   Token ID of underlying ERC-721 to be borrowed against
   * @param   _referral       Referral code as a plain string
   * @param   _signature      Signed message authorizing the referral, provided by Honey Labs
   */
  function borrowReferred(
    uint256 _borrowAmount,
    uint256 _collateralId,
    string calldata _referral,
    bytes calldata _signature
  ) external;

  /**
   * @notice  Sender repays a borrow taken against the specified collateral asset
   * @dev     Pull pattern, user must approve the contract before calling.
   * @param   _repayAmount    Amount of underlying ERC-20 to repay
   * @param   _collateralId   Token ID of underlying ERC-721 to be repaid against
   */
  function repayBorrow(
    uint256 _repayAmount,
    uint256 _collateralId,
    address _to
  ) external;

  /**
   * @notice  Burn deposit coupon NFTs and withdraw the associated underlying ERC-721 NFTs
   * @param   _collateralIds  Token IDs of underlying ERC-721 to be withdrawn
   */
  function withdrawCollateral(uint256[] calldata _collateralIds) external;

  /**
   * @notice  Trigger transfer of an NFT to the liquidation contract
   * @param   _collateralId   Token ID of underlying ERC-721 to be liquidated
   */
  function liquidateBorrow(uint256 _collateralId) external;

  /**
   * @notice  Pay off the entirety of a liquidated debt position and burn the coupon
   * @dev     May only be called by the liquidator
   * @param   _borrower       Owner of the debt position
   * @param   _collateralId   Token ID of underlying ERC-721 to be closed out
   */
  function closeoutLiquidation(address _borrower, uint256 _collateralId) external;

  /**
   * @notice  Accrues all interest due to the protocol
   * @dev     Call this before performing calculations using 'totalBorrows' or other contract-wide quantities
   */
  function accrueInterest() external;

  // ----- Utility functions -----

  /**
   * @notice  Sweep accidental ERC-20 transfers to this contract.
   * @dev     Tokens are sent to the DAO for later distribution
   * @param   _token  The address of the ERC-20 token to sweep
   */
  function sweepToken(IERC20 _token) external;
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.8.4;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import "@openzeppelin/contracts/access/IAccessControl.sol";

/**
 * @title   Interface of HToken Internal
 * @author  Honey Labs Inc.
 * @custom:coauthor m4rio
 * @custom:coauthor BowTiedPickle
 */
interface HTokenInternalI is IERC1155, IAccessControl {
  struct Coupon {
    uint32 id; //Coupon's id
    uint8 active; // Coupon activity status
    address owner; // Who is the current owner of this coupon
    uint256 collateralId; // tokenId of the collateral collection that is borrowed against
    uint256 borrowAmount; // Principal borrow balance, denominated in underlying ERC20 token.
    uint256 debtShares; // Debt shares, keeps the shares of total debt by the protocol
  }

  struct Collateral {
    uint256 collateralId; // TokenId of the collateral
    bool active; // Collateral activity status
  }

  // ----- Informational -----

  function decimals() external view returns (uint8);

  function name() external view returns (string memory);

  function symbol() external view returns (string memory);

  // ----- Addresses -----

  function collateralToken() external view returns (IERC721);

  function underlyingToken() external view returns (IERC20);

  // ----- Protocol Accounting -----

  function totalBorrows() external view returns (uint256);

  function totalReserves() external view returns (uint256);

  function totalSupply() external view returns (uint256);

  function totalFuseFees() external view returns (uint256);

  function totalAdminCommission() external view returns (uint256);

  function accrualBlockNumber() external view returns (uint256);

  function interestIndexStored() external view returns (uint256);

  function totalProtocolCommissions() external view returns (uint256);

  function userToCoupons(address _user) external view returns (uint256);

  function collateralPerBorrowCouponId(uint256 _couponId) external view returns (Collateral memory);

  function borrowCoupons(uint256 _collateralId) external view returns (Coupon memory);

  // ----- Views -----

  /**
   * @notice  Get the outstanding debt of a collateral
   * @dev     Simulates accrual of interest
   * @param   _collateralId   Token ID of underlying ERC-721
   * @return  Outstanding debt in units of underlying ERC-20
   */
  function getDebtForCollateral(uint256 _collateralId) external view returns (uint256);

  /**
   * @notice  Returns the current per-block borrow interest rate for this hToken
   * @return  The borrow interest rate per block, scaled by 1e18
   */
  function borrowRatePerBlock() external view returns (uint256);

  /**
   * @notice  Get the outstanding debt of a coupon
   * @dev     Simulates accrual of interest
   * @param   _couponId   ID of the coupon
   * @return  Outstanding debt in units of underlying ERC-20
   */
  function getDebtForCoupon(uint256 _couponId) external view returns (uint256);

  /**
   * @notice  Gets balance of this contract in terms of the underlying excluding the fees
   * @dev     This excludes the value of the current message, if any
   * @return  The quantity of underlying ERC-20 tokens owned by this contract
   */
  function getCashPrior() external view returns (uint256);

  /**
   * @notice  Get a snapshot of the account's balances, and the cached exchange rate
   * @dev     This is used by controller to more efficiently perform liquidity checks.
   * @param   _account  Address of the account to snapshot
   * @return  (token balance, borrow balance, exchange rate mantissa)
   */
  function getAccountSnapshot(address _account)
    external
    view
    returns (
      uint256,
      uint256,
      uint256
    );

  /**
   * @notice  Get the outstanding debt of the protocol
   * @return  Protocol debt
   */
  function getDebt() external view returns (uint256);

  /**
   * @notice  Returns protocol fees
   * @return  Reserve factor mantissa
   * @return  Admin fee mantissa
   * @return  Hive fee mantissa
   * @return  Initial exchange rate mantissa
   * @return  Maximum borrow rate mantissa
   */
  function getProtocolFees()
    external
    view
    returns (
      uint256,
      uint256,
      uint256,
      uint256,
      uint256
    );

  /**
   * @notice  Returns different addresses of the protocol
   * @return  Liquidator address
   * @return  HTokenHelper address
   * @return  Controller address
   * @return  Admin Fee Receiver address
   * @return  Hive Fee Receiver address
   * @return  Interest Model address
   * @return  Referral Pool address
   * @return  DAO address
   */
  function getAddresses()
    external
    view
    returns (
      address,
      address,
      address,
      address,
      address,
      address,
      address,
      address
    );

  /**
   * @notice  Get the last minted coupon ID
   * @return  The last minted coupon ID
   */
  function idCounter() external view returns (uint256);

  /**
   * @notice  Get the coupon for a specific collateral NFT
   * @param   _collateralId   Token ID of underlying ERC-721
   * @return  Coupon
   */
  function getSpecificCouponByCollateralId(uint256 _collateralId) external view returns (Coupon memory);

  /**
   * @notice  Calculate the prevailing interest due per token of debt principal
   * @return  Mantissa formatted interest rate per token of debt
   */
  function interestIndex() external view returns (uint256);

  /**
   * @notice  Accrue interest then return the up-to-date exchange rate from the ERC-20 underlying to the HToken
   * @return  Calculated exchange rate scaled by 1e18
   */
  function exchangeRateCurrent() external returns (uint256);

  /**
   * @notice  Calculates the exchange rate from the ERC-20 underlying to the HToken
   * @dev     This function does not accrue interest before calculating the exchange rate
   * @return  Calculated exchange rate scaled by 1e18
   */
  function exchangeRateStored() external view returns (uint256);

  /**
   * @notice  Add to or take away from reserves
   * @dev     Accrues interest
   * @param   _amount  Quantity of underlying ERC-20 token to change the reserves by
   */
  function _modifyReserves(uint256 _amount, bool _add) external;

  /**
   * @notice  Set new admin fee mantissas
   * @dev     Accrues interest
   * @param   _newAdminCommissionMantissa        New admin fee mantissa
   */
  function _setAdminCommission(uint256 _newAdminCommissionMantissa) external;

  /**
   * @notice  Set new protocol commission and reserve factor mantissas
   * @dev     Accrues interest
   * @param   _newProtocolCommissionMantissa         New protocol commission mantissa
   * @param   _newReserveFactorMantissa   New reserve factor mantissa
   */
  function _setProtocolFees(uint256 _newProtocolCommissionMantissa, uint256 _newReserveFactorMantissa) external;

  /**
   * @notice  Sets a new admin fee receiver
   * @param   _newAddress   Address of the new admin fee receiver
   * @param   _target       Target ID of the address to be set
   */
  function _setAddressMarketAdmin(address _newAddress, uint256 _target) external;
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.8.4;

import "./HTokenI.sol";

import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";

/**
 * @title   PermissionlessOracleI interface for the Permissionless oracle
 * @author  Honey Labs Inc.
 * @custom:coauthor BowTiedPickle
 * @custom:coauthor m4rio
 */
interface PermissionlessOracleI {
  /**
   * @notice returns the price (in eth) for the floor of a collection
   * @param _collection address of the collection
   * @param _decimals adjust decimals of the returned price
   */
  function getFloorPrice(address _collection, uint256 _decimals) external view returns (uint128, uint128);

  /**
   * @notice returns the latest price for a given pair
   * @param _erc20 the erc20 we want to get the price for in USD
   * @param _decimals decimals to denote the result in
   */
  function getUnderlyingPriceInUSD(IERC20 _erc20, uint256 _decimals) external view returns (uint256);

  /**
   * @notice get price of eth
   * @param _decimals adjust decimals of the returned price
   */
  function getEthPrice(uint256 _decimals) external view returns (uint256);

  /**
   * @notice get price feeds for a token
   * @return returns the Chainlink Aggregator interface
   */
  function priceFeeds(IERC20 _token) external view returns (AggregatorV3Interface);

  /**
   * @notice returns the update threshold for a specific _collection
   */
  function updateThreshold(address _collection) external view returns (uint256);

  /**
   * @notice returns the number of floors for a specific _collection
   * @param _address address of the collection
   *
   */
  function getNoOfFloors(address _address) external view returns (uint256);

  /**
   * @notice returns the last updated timestamp for a specific _collection
   * @param _collection address of the collection
   *
   */
  function getLastUpdated(address _collection) external view returns (uint256);
}

//SPDX-License-Identifier: BUSL-1.1

pragma solidity ^0.8.15;

error Unauthorized();
error AccrueInterestError(Error error);
error WrongParams();
error Unexpected(string error);
error InvalidCoupon();
error ControllerError(Error error);
error AdminError(Error error);
error MarketError(Error error);
error HTokenError(Error error);
error LiquidatorError(Error error);
error ControlPanelError(Error error);
error HTokenFactoryError(Error error);
error PausedAction();
error NotOwner();
error ExternalFailure(string error);
error Initialized();
error Uninitialized();
error OracleNotUpdated();
error TransferError();
error StalePrice();

/**
 * @title   Errors reported across Honey Labs Inc. contracts
 * @author  Honey Labs Inc.
 * @custom:coauthor BowTiedPickle
 * @custom:coauthor m4rio
 */
enum Error {
  UNAUTHORIZED, //0
  INSUFFICIENT_LIQUIDITY,
  INVALID_COLLATERAL_FACTOR,
  MAX_MARKETS_IN,
  MARKET_NOT_LISTED,
  MARKET_ALREADY_LISTED, //5
  MARKET_CAP_BORROW_REACHED,
  MARKET_NOT_FRESH,
  PRICE_ERROR,
  BAD_INPUT,
  AMOUNT_ZERO, //10
  NO_DEBT,
  LIQUIDATION_NOT_ALLOWED,
  WITHDRAW_NOT_ALLOWED,
  INITIAL_EXCHANGE_MANTISSA,
  TRANSFER_ERROR, //15
  COUPON_LOOKUP,
  TOKEN_INSUFFICIENT_CASH,
  BORROW_RATE_TOO_BIG,
  NONZERO_BORROW_BALANCE,
  AMOUNT_TOO_BIG, //20
  AUCTION_NOT_ACTIVE,
  AUCTION_FINISHED,
  AUCTION_NOT_FINISHED,
  AUCTION_BID_TOO_LOW,
  AUCTION_NO_BIDS, //25
  CLAWBACK_WINDOW_EXPIRED,
  CLAWBACK_WINDOW_NOT_EXPIRED,
  REFUND_NOT_OWED,
  TOKEN_LOOKUP_ERROR,
  INSUFFICIENT_WINNING_BID, //30
  TOKEN_DEBT_NONEXISTENT,
  AUCTION_SETTLE_FORBIDDEN,
  NFT20_PAIR_NOT_FOUND,
  NFTX_PAIR_NOT_FOUND,
  TOKEN_NOT_PRESENT, //35
  CANCEL_TOO_SOON,
  AUCTION_USER_NOT_FOUND,
  NOT_FOUND,
  INVALID_MAX_LTV_FACTOR,
  BALANCE_INSUFFICIENT, //40
  ORACLE_NOT_SET,
  MARKET_INVALID,
  FACTORY_INVALID_COLLATERAL,
  FACTORY_INVALID_UNDERLYING,
  FACTORY_INVALID_ORACLE, //45
  FACTORY_DEPLOYMENT_FAILED,
  REPAY_NOT_ALLOWED,
  NONZERO_UNDERLYING_BALANCE,
  INVALID_ACTION,
  ORACLE_IS_PRESENT, //50
  FACTORY_INVALID_UNDERLYING_DECIMALS,
  FACTORY_INVALID_INTEREST_RATE_MODEL
}

{
  "optimizer": {
    "enabled": true,
    "runs": 300
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

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